Miguel alvarez



Patented Nov. 6, 1923.

a armes lJNlTE lanas@ MIGUEL ALVAREZ, OF SANTIAGO, CHILE.

RAIL JOINT.

Application filed April l0, 1920. i Serial No. 372,949.

T all whom t may concern Be it known that I, MIGUEL ALVAREZ, citizen ofthe Republic ot' Chile, and residing at Santiago, Chile, Avenida ElSalvador No.

2059, have invented a new and useful Improvenient in Rail Joints.

rIhis invention reers to a new system for the joining or" rails oftramcars and wagons, Whose object is to eliminate the movement of therails at their oints, thus avoiding the troublesome blow to passengersand at the same time the damage that is caused to the rolling stock andthe wear and tear of the rails.

This invention consists of boring the rails transversely at the ends ofboth and afterwards intro ducinw a tightly fitting hard steel aluof.

l Tthis system has been practically used and it has been provedsatisfactory, leaving intentionally the ish-plate in a loose condition,having observed that the rails have had no relative movement whateverand entirely eliminating the blow on the passing of the i cars.

The diameter of the plug may be varied according to the cargo and thenormal use of the top part of the rail, it being applicable both to thePhoenix and Vignol rail, and

:so where the rails are imbedded by pavement -or soil.

Referring to the drawings, Fig. l shows the joining of the rails l and 2with ish plate 3 and bolts A placed. 5 is the plug in its position. Fig.2 shows an end view of the rail with the plug placed. f

Fig. 3 is a side view of a modification which permits expansion andcontraction of the rails.

Fig. Ll is an end view of the modified arrangement.,

rthis invention is also applicable to railroads that are subject to aperiodi-cal expansionv and contraction.

In this case the plug in the form of an elongated key, is placed atcertain distances which on being` introduced on the corresponding slotsin both rails, allow of a longitudinal movement of the rails.

rlhe other joints are made up with the common cylindrical plugs.

The distance between the elongated plugs is fixed according tothecountry and climate where this invention is to be applied.

I am not aware that prior to my invention, tramcar rails have been oinedaccording to my system, and therefore I claim:

l. In a rail joint, the combination with the ends of'two rails arrangedvend to end and having heads provided with oppositely 50 disposedtransversely arranged horizontal recesses extending inwardly from oneside of the heads, of a solid bridge plug arranged in said recesses anddesigned `to prevent relative vertical movement of the ends of the 55rails.

2. In a rail joint, the combination with the ends of two standard railsarranged end to end and having heads provided with oppositely disposedtransversely arranged horizontal recesses extendinoa inwardly from oneside of the heads to a point adjacent the transverse center of theheads, of a hard metal plug removably arranged in said re cesses anddesigned to prevent relative vertical movement oit the ends rof therails.

In testimony whereof I have signed this specification this 9th day ofMarch 1920.

MIGUEL ALVAREZ. Witnesses: f

WALTER J. TINGLE, L. CARNECKER.

